Electric cut-out.



J. F. CONRAD.

ELECTRIC CUT-OUT.

APPLICATION FILED DEC-13,1913.

Patented Mar. 21, 1916.

2 $HEETS$HEET I.

Witnese Attorneys J. F. CONRAD.

ELECTRIC CUT-OUR.

APPLICATION FILED DEC. 13. 1913.

1,176,034. Patented Mar. 21, 1916.

2 SHEETSSHEET 2.

l nvenfco r V a a Attorneys [JOHN FL 'GONRAD; OF NANTY"GLO, PENNSYLVANIA.

ELECTRIC CUT-OUT.

To all whom/it may concern:

Be-it. known that 1, JOHN F. CONRAD, a

citizen of the United States, residing at ments in an electric'cut out, one object of: the

invention being the provision of. a manually operated out out especially adapted. for use in connection with trolley lines, and

-moreparticularly to lines: used in mines,

where itis desired. to isolate one sectionv of the trolley from the other, and where. it is desirable to produce a cut out that does not; produce a gap-or space at. thea'd-jac'ent ends: pfxthe trolley, such en'ds tin. thisinstance be u ing securedtogether a sectional clamp,

the sections of: which arev insulated. from each other.

A further object of the present invention isthe provision of an electrical cut out adapted to be connected to and supported from a sectional trolley clamp, whereby when necessary the switch member may be operated to isolate one trolley section from the other, there being provided a peculiar lapping arrangement between the sections to reduce the, arcing to a minimum as the trollev' wheel passes such point, the switch itself being provided with a resiliently hung member which when tl'ie same is operated to open position will have aytendeney to lag and drag from its contact to be finally snapped opentothus. reduce the arc1atsuch.

point when the switch is being opened.

With the foregoing and other objects in view which will appear as the description proceeds. the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawings Figure 1 is a side elevation of the complete cut out. Fig. 2 is a top plan view thereof. Fig. 3 is a similar view to Fig. 1 taken from the opposite side. Fig. 4 is a section taken on line of Fig. 1. Fig. 5 is a section taken on line 5-5 of Fig. 2. Fig. 6 is a side elevation of the block of insulation per se. Fig. 7 is a similar view looking, from the opposite direc-- specification of Letters Patent.

ted as at 11 Patented Mar. 21, 1916. j

Application filed December 13, 1913. Serial No. 806,543.

tion. block of insulation.

Referring to the drawings, the numeral 1 designates a block of insulation, which has placed above the upper edge thereof, two metal reinforcing plates 2 for the reception of. the bolts?) and 4, said bolts 3 and i being extended through such insulation and holding the shoe members 5 and 6 relatively thereto so that their reduced inner terminals 7 and 8,. as clearly illustrated in Fig. 1 will have an overlapping effect as regards each other, yet be out of contact and insui 70 Theblcck of insulation 1 as clearly illus lated from each other. 1

Fig. 8 is a lower end view of the tratedis. recessed from-opposite ends uponv one'edge as at. 7 and 8 ".to provide the trol a i ley wheel engaging edge 1 thereloetween.

Thus, the reduced inner. terminals .7 and'8 are adapted to seat within the respective recesses 7" ands and form a continuationof s the edge 1', so thatthe wheel passing from one terminal 7 to the other terminal 8 will engage the edge 1, but before emerging from contactwith one terminal 7 will engage the cther terminal 8, thus preventing arcing at this point.

Formed integralwith the shoe 6 and projecting thereabove in parallel with one side of the insulating block 1 is a pl ate 9, which.

is connected fixedly thereto. by 'mea'ns of screws 10 so as to provide a rigid support for the supporting lug 1 1. This supporting lug 11, as. clearly illustrated in Fig.4. is slot- The pin or bolt 12 forms a pivct for. the bifurcated end 13 of the. mains;

switch. actuating lever 14 which may be made of a cheap metal, as for instance iron, and having the offset handle 16 so that the present cut out may be properly and easily manipulated without endangering the operator relatively to the current carried in the trolley T. A pin or bolt 17 is fitted through the lug 11 adjacent the slotted portion 11 thereof and carries the spool end 17 for the reception of the coiled spring 18 having the respective terminals 19 and 20 which normally cross each other and assume the position as shown in Fig. 2. A switch blade 21 is pivoted upon the pin 17 within the slot 11 of the lug 11, and has its free end 22 reduced, there being connected to such blade a pin 23, as clearly illustrated in Fig. 5, which is apertured to receive the free end of the terminal 19 of the spring, there being connected to the lever 14 a similar stud or pin 24 for the sliding reception of the freeend of the terminal 20. It will thus be seen that When the handle 16 is manipulated to as- 19'will be to move toward the terminal 20 it finally assuming the position, as shown in full lines'with the blade 21 against the con trolling lever 1-1 but out of contact with the contact plates26. i

The contact plates 26 are disposed in the path to be engaged by the reduced portion 22, are formed integral with or in contact with the shoe 5 and are connected to the same face of the block 1 of insulation as is the plate 9. By this means it will be seen that the current flowing from the shoe6 will becarried throug'hthe {copper blade 21 to the shoe 5,'altho'iigh the member 14 will also form apath for the "current.

. l/Vhen the parts are in the position as shown in Fig. 2, and the handle 16 is ma.- nipulated to open the switchmember 21, the spring 18 will permit the movement of the member 14 out of contact with the contact plate 27 before there is suiiicient tension thrown upon the terminal 19 of the spring to release the blade or switch 21. Even when such tension is thrown thereupon, the blade 21 is slowly withdrawn and finally whenthe contact thereof with the plates 26 is reduced to the minimum, the terminals'of the spring having a tendency to move toward each other will impart a quick snap to the switch 21 andcthus free the same from the contact plates 26 with the least possible arcing effect at such point. During a movement of these parts, the coil 18 of the spring has a tendency 'to rotate upon the drum or spcol member 17 so that such coils have a winding tension placed upon them which imparts force or pressure to the terminal 19. and consequently therethrough to openthe Switchblade 21. The ribs 27 and 28 are provided to limit the upward movement of the flanges or rims of a trolley wheel, where the groove in the wheel has worn deep, or when the contact lower edges of the shoes 5 and 6 and theblcck 1 have been worn.- It

will be noted that the position of thehandle 16 and the rounding ofthe lug 11 permit the passage thereby of atrolley wheel in case ofa jumping trolley wheel, without endangering the switch, or operating it. l 1

What is claimed 'is:' J

A circuit breaker, comprising a block of; insulation, one edge portion of which is re 1 cessed from opposite ends-so that theends of the recesses toward thecenter of the block'l t overlap to produce a trolleyrwire receiving edge intermediate the recesses, two metalshoes fitting in'saidfr'eces'sesj two metal 2' plates resting against the edge offlthe block opposite the aforesaid edge, bolts piercing;

the plates and block and locking the respec- I tive metal shoes to the block, a portionof '1 each shoe being extended upwardly against the face'ofthe block, said extensions being ually controlled switchconnected toone ex;

my own, I have hereto affixed my signature in the presence of two witnesses." i

Witnesses:

, SELINAVW'ILLSON, 1

I; E. SnrP'soN.'

'75 'upcn th'e-s'ame face of the block,1and a mantension for contact with the other extension.

In testimony that I claim the foregoing as JOHN F. CONRAD.

Copies of this patent may be obtained for five cents each,'by addressing.thefcommissidner of laten'te, f

' Washington, 13,0. a 

